Light bulb



FIG. 1 is a perspective view of a light bulb thereof;

FIG. 2 is a front view of the light bulb thereof;

FIG. 3 is a back view of the light bulb thereof;

FIG. 4 is a top view of the light bulb thereof;

FIG. 5 is a bottom view of the light bulb thereof;

FIG. 6 is a right side view of the light bulb thereof; and,

FIG. 7 is a left side view of the light bulb thereof.

The broken lines immediately adjacent the shaded areas represent thebounds of the claimed design while all other broken lines are directedto environment and form no part of the claimed design.

CLAIM The ornamental design for a light bulb, as shown and described.